References

http://oceancurrents.rsmas.miami.edu/atlantic/brazil.html

http://www.elnino.noaa.gov/lanina.html

www.wunderground.com note charts titled ENSO effects and Wind speed in knots were generated using station data from weather station SUMU.

https://www.cia.gov/library/publications/the-world-factbook/

http://www.jstage.jst.go.jp/article/jmsj/80/1/21/_pdf

http://apod.nasa.gov/apod/ap100105.html